Square D Digest 179

Non-Reversing

Type S Combination Starters

Class 8538, 8539 / Refer to Catalog 8538CT9701

www.se.com/us

Enclosures

NOTE: These dimensions are for reference only. If you need precise measurements, contact the Customer Care Center at 1-888-778-2733. Table 16.155: See Figure: NEMA 4X Polyester Enclosure, page 16-60 [76] NEMA Size Class Dimensions, in. Type A B C E F 0, 1 8538

A

E

SBW SCW SDW SBW SCW SDW

13.72

11.4

26.94

6.25

25.75

C

F

0, 1 8539 0, 1, & 2 8738, 8739

16 NEMA AND DEFINITE PURPOSE CONTACTORS AND STARTERS

25.25

11.4

27.00

17.88

25.75

8538, 8539

2

SEW SFW [77]

8538, 8738 8539, 8739

3–4

26.31

11.4

33.50

18.50

32.25

B

Table 16.156: See Figure: Class 8538 and 8539 in Oversize Enclosures—NEMA 1 and 4X Stainless, and 12/3R, page 16-60 NEMA Size NEMA Dimensions, in. Mounting

Figure 16.8: NEMA 4X Polyester Enclosure

Type Encl.

Deep C

Wide A

High B 28.33 30.03

Handle L

Handle Swing

D

E

D A

L

C

1 4

15 15 15

9.59 9.59

3.25 3.25 3.25

11.625

26.25 29.75 30.25

0–2

10

12

31

10.97

9

Information on Hubs Hubs are supplied with each NEMA Type 4X combination starter as shown in Table 16.157. Note that hubs are only installed in stainless steel enclosures; they are not installed in polyester enclosures. Table 16.157: Hub Sizes NEMASize Quantity Hub Size (in.) 0and1 0.75 2.50 NOTE: Illustrations may not represent the actual enclosure—they are intended for dimensional information only. Table 16.158: Conduit Sizes LOC A, B, C and D NEMASize Standard 0–1 1.25 2 1.5 3–4 2.5 5 4 1 2 1 2 1 2 0.75 1.00 0.75 1.50 2 3and4

E B

(4) .31 Dia. Mtg. Holes 8

Figure 16.9: Class 8538 and 8539 in Oversize Enclosures—NEMA 1 and 4X Stainless, and 12/ 3R

[76] Dimensions also for FormF4T (standard control transformer) and FormF4T10 (50 VA additional capacity). Other control transformers may require the use of oversized enclosures. Refer to . [77] 8539 Size 4 only.

16-60

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